Could you please be more clear on your requirement, as I understood you are requesting for checking a file's existance. Let me give you an example for same.
Code:
if [[ -f "file2" ]]
then
echo
"file2 is present."
else
echo "file2 is NOT present."
fi
In my case file is present so it will give following output. Also please refer man test for more information. Hope this helps.
Code:
file2 is present.
Thanks,
R. Singh
file will exist all the time and it will get update with data(like log file).
like push_back in cpp, data will be pushed into the file after every iteration.
I want to read Time value.
But trick is I want to read last two time occurrences and compare file existence.
If you see in my previous reply, last two time values are 2 and 3.
I want to check whether data files(these files are different) for
these time are present or not.
In the same case, since simulation is still going there will be no data files for time 3. After finished with 2nd simulation data some data will be written. but in log file I can see Time =3 as well which is not done yet.
Let me know if you still didn't understand.
Thanks for help.
---------- Post updated at 07:05 PM ---------- Previous update was at 06:56 PM ----------
Making my explanation even more simple:
How can I read last two occurrences of time value?
Hope following example may help you(for bash). Here is a command named stat you can check by man stat for more information on same. Lets say we have 2 files named file2 and file33. Now let us compare their modify timings.
Code:
val1=`stat file2 | awk '/Modify/ {print $2}'`
echo $val1
2014-09-01
val2=`stat file33 | awk '/Modify/ {print $2}'`
echo $val2
2014-09-03
if [[ "$val1" == "$val2" ]]
then
echo "timings are equal."
else
echo "timings are NOT equal."
fi
timings are NOT equal.
Let me know if I can help further. By this we can compare the timings of files and check if files have been modified or not for today's date.
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